Cutter-head.



V. R. KOONTZ.

CUTTER HEAD.

APPLIOATION FILED JUNE 23, 1913.

1,098,268. Patented May 26, 1914.

3 SHEETS-SHEET 1.

Witness es M I Attorneys V. R. KOONTZ.

CUTTER. HEAD.

APPLIGATION FILED JUNE 23, 1913.

Patented May 26, 1914.

SH TS-EiH //.3

fl gxfl 2 y 9 o m? M/ y MW a Attorneys v. R. KOONTZ.

CUTTER HEAD.

APPLICATION IILEDJUNE 23, 1913.

Patented May 26, 1914.

3 SHEETSSHEET 3.

Witnesses Attorneys I: A i.

VICTOR R. KOONTZ, 0F WAYNESBORO, PENNSYLVANIA.

CUTTER-HEAD.

Specification of Letters Patent.

Patented May 26, 1914.

Application filed June 23, 1913. Serial No. 775,385.

To all whom it may concern Be it known that I, Vroron R. K'oon'rz, acitizen of the United States, residing at Vaynesboro, in the county ofFranklin and State of Pennsylvania, have invented a new and usefulCutter-Head, (Case A,) of which the following is a specification.

The present invention relates to improvements in cutter heads, and moreespecially to that type of cutter head, in which the cutter or dieholders, are so mounted as to be moved into and out of work engagingposition, and to be so adjusted, that such movement is limited, oneobject of the present invention, being the provision of novel means,whereby the movement into and out of work engaging position isaccomplished in a positive manner.

A further object of the present invention is the provision of astructure of this character, which provides for all of the necessaryadjustments, whereby the cutting ends of the cutters or dies arepositioned for cutting threads upon machinescrews or bolts or lagscrews.

With the foregoing and other objects in view which will appear as thedescription proceeds, the invention resides in the combination andarrangement of parts and in the details of construction hereinafterdescribed and claimed, it being understood that changes in the preciseembodiment of the invention herein disclosed can be made Within thescope of what is claimed without departing from the spirit of theinvention.

In the drawingsFigiire 1 is a planview of the base of the cutter head.Fig. 2 is a section taken on line 2-2 of Fig. 1. Fig. 3 is a plan viewof the tool or cutter holder carrying member with the holders removed.Fig. 4 is a plan view of the plate for limiting the movement of the toolor cutter holder. Fig. 5 is a plan View of the main actuating member ofthe cutter head. Fig. 6 is a perspective view of the connection betweenthe tool holder and operating mechanism for moving the tool holders intoand out of work engaging position and for adjusting the same to limitsuch movement. Fig. 7 is a perspective view of the support for onemember of the tool or cutter holder. Fig. 8 is a detail perspective viewof the tool or-cutter holder. Fig. 9 is a similar View 01 the operatingmember for swinging the cutter holder upon its pivot.

Referring to the drawings, the numeral 1 designates the main sleeve ortubular member of the cutter head, which has formed integral therewith,the disk or plate 2, there being disposed for limited oscillatorymovement about the sleeve 1, a disk 3, which has also abutting it, themain controlling disk 4, whose sleeve 5 surrounds the sleeve 1 and issplined or keyed thereto for sliding movement. A circumferential groove6'is formed in the sleeve 5, whereby means for imparting slidingmovement to the sleeve 5 and disk 4 may be properly attached thereto. Bymeans ofthe diametrically disposed arcuate slots 10 in the member 4, andthe screw threaded apertures 12 of the member 3, bolts 11 provide ameans to secure the disks 3 and 4 together for consonant action.

, The tool holder carrying member or disk 2 is provided with slots 7which are disposed tangentially to the center opening of the disk 2, asclearly illustrated in Fig. 3, while formed in the disk 3 are thearcuate slots 8, which are disposed at different tangents to the slots7, the disk 4 being provided with the slots 9, which. are disposed toaline with the slots 7 of the disk 2 while the slots 8 are interposedbetween the respective alined slots 7 and 9.

The face of the disk 3 adjacent to the disk 4 is provided with theradial groove or slot 13, which is disposed to receive the pin 14 of theblock 15, said block 15 being disposed for sliding movement in therectangu lar slot 16 of the disk 4 and being threaded upon the operatingscrew 17 whose operating end 18 is disposed exteriorly of the disk 4 inready access to the operator. By this means, the block 15 is moved atany desired position within the slot 16 and thus oscillates the disk 3to adjust the same so that the respective slots 8 are moved relativelyto the alined slots 7 and 9 of the disks 2 and 4 and thus re ulate, aswill presently appear, the movement of the tool or cutter holders 35,'tobe described in detail later on.

Each cutter holder operating member 28, is provided with an operatingpin or stud 19, whose elongated portion 20 is disposed for slidingmovement in its respective slot 7 of the disk 2, while its reducedportion 21 is disposed within its respective slot 8 of the disk 3, withits curved faces 22--22 disposed for contact with the parallel faces2323 of the slot 8. When the parts are in the position, as shown in Fig.2, the pin or stud 19 being positioned to place the tools or cutters inwork engaging position, the movement of the sleeve 5, and consequentlythe disks 3 and 4, so that the disks 3 and 4 are separated from the disk2, causes the inclined faces 24 and 25, to engage the inclined portions24 and 25 of the pin or stud 19, and thus move the studs outwardly so asto place the tools or cutters out of work engaging position.

The outer face of the disk 2 is provided with a plurality of dove-tailedgrooves 27, for the sliding reception of the base of the tool or cutterholder actuating member 28. This member, as clearly shown in Fig. 9, isprovided with a bore 29 for the reception of the cylindrical portion ofthe stud or pin 19, the upper end of which is threaded for the receptionof the locking cap 19, as clearly illustrated in Fig. 2. By this meansit will be seen that when the pin 19 is actuated, due to the slidingmovement of the disks 3 and 4, the member 28 will be moved inwardly oroutwardly and thus as will presently appear, swing the tool holder sothat its tool will move into and out of work ongaging position. Themember 28 is provided with the upstanding projection 30, whose outerface intermediate of the ends, is provided with a socket 31 and with thepeculiar double beveled face 32, the purpose of which will presentlyappear. The upper face of the member 28 beyond the projection 30 isprovided with the projection 33 having its opposite long sides beveled.The upper face at 3434 is double beveled, as clearly illustrated in Fig.9. The tool holder 35 is provided with the rear end 36, which by meansof the pin 37 is pivoted to the flattened head 38 of the oscillating andvertically slid-able pin 39. This pin 39, as clearly illustrated in Fig.2, is disposed to fit within the cylindrical aperture 40 of the disk 2and thus form a pivotal means or support for the tool holder 35 so thatwhen the operating member 28 thereof is moved, the recess 45 of the toolholder 35 being fitted upon the double bevel projection 33 and acrossthe double beveled portions 3434 of the operating member 28, so as tohave a slight swinging movement, the end adjacent the work is moved intoand out of work engaging position. upon the outer edge is provided withthe recess 40 while an adjusting ring 41 for the pin 38 is connected bythe screw threads 42 to the disk 2 so that a slight movement of the ring41 due to the engagement of the inwardly projecting rim 43 in therecesses 40 of the pins 39, will cause the movement of The head 38 ofthe pin 39 the head 38 to and from the face of the disk 2. By thismeans, the pivotal point 37 of the tool holder 35 is raised or loweredrelatively to the outer face of the disk 2, so that the inner end or theend adjacent the work, is presented atany desired angle. In order toindicate the relative adjustment of the ring 41, so that the pins 39 maybe ad justed to an exactness, an indicator 44 is carried by the disk 2and is disposed to correlate with the graduations a upon the outer faceof the ring 41, as clearly illustrated in Fig. 1.

The tool holder 35, as clearly illustrated in Fig. 8, is provided withthe projecting rib 46, which coacts with the base of the holder to forma longitudinal receptacle for the tool 47, a bolt 48 being disposed toproject through the elongated slot 49 of the tool holder 35 and engageone of the threaded apertures or sockets 50 of the tool to lock the toolrelatively to the holder. In order that the tool holder 35 may be heldwith its inner end properly positioned relatively to the Operatingmember 28, a pin 51 is positioned. in the outer end thereof and has itsreduced end projected within the recess 31 of the projection 30 of themember 28 while the face of the tool holder 35 adjacent the doublebeveled portion 32 is disposed to have the necessary rocking movementdue to the change of angularity between the member 28 and the toolholder 35 caused by the actuation of the members 28 when the same aremoved to place the tool into and out of work engaging position, suchaction being due to the fixed position of the pins 39 relatively to thedisk 2. In order to hold the tool 47 against longitudinal movement, thescrew 52 is carried by the end 36 of the tool holder 35.

From the foregoing description, it is evident that with a cutter headconstructed according to and embodying the present invention, that thetools 47 may be adjusted after once positioned in their respectiveholders so that the inner cutting ends are disposed for cutting threadsupon machine screws or bolts, or upon wood screws, as for instance lagscrews, where the points are slightly tapered. This adjustment isaccomplished entirely through the ring 41 which may or may not beprovided with means for locking the same in its desired adjustedposition relatively to the disk 2 which is the main carrying member ofthe present cutter head.

In using the present cutter head, and assuming that the tools or cutters41 are positioned in the respective holders 35, the bolts 11 arereleased, so that the disk 3 may be moved independently of the disk 4.The screw 17 is then actuated so as to move the block 15, and throughthe pin 14 oscillate the disk 3 to the desired position, at which timethe bolts 11 are tightened, and thus the disk 3 is secured fixedly tothe disk 4 so as to be moved therewith. As the disk 4 is only permitteda longitudinal movement upon the sleeve 1, it is therefore evident thatthe disks 3 and a will rotate with the disk 2 and in order to operatethe respective tool holder actuating members 28, it is simply necessaryto impart a longitudinal move? ment to the sleeve 5 and consequently thedisks 4: and 3, and not the usual oscillatory movement as is the presentpractice. This movement, due to the peculiar construction of the slots 8of the member 3 and the staggered ends of the pins or studs 19, impartthe necessary sliding movement to the elongated head 20 of the pins orstuds 19, and consequently slide the tool holder actuating members'28 inthe recesses or grooves 27 of the disk 2. By this means, the projection33 of the member 28 through the recess 45 of the tool or tool or cuttercarrier 35 moves the inner end of the cutter holder 35 so that thecutting end of the tool 47 is moved to and from work engaging position,the holder 35 due to the pivoting of the same by means of the pin 39being slightly flexed with the connections at 33 and 45 the pivotingpoint. The peculiar beveling of the member 30 and the projecting end ofthe member 28 and the peculiar shape of the shoulder 33 permits of thenecessary flexing movement between the member 28 and the tool holder 35,while the beveled portions 34 and 34L permit of the necessary rockingmovement due to the elevated or lowered position of the out-er end ofthe tool holder 35 due to the adjusting ring 41, which is moved so as topresent the rim 43 in different posit-ions relatively to the outer faceof the disk 2.

\Vhat is claimed is:

1. A cutter head, including a main carrying member, a cutter holderactuating member slidably mounted in the member, a cutter holderconnected to the inner end thereof for movement into and out of workengaging position, an operating pin carried by the actuating member andmounted in the main carrying member, one end of said pin being projectedbeyond the opposite side of the main carrying member, two cooperatingand adjusting actuating member operating members adjustably connectedtogether for sliding movement to and from the main carrying member,cooperating means carried by one of the latter members and theprojecting end of the pin whereby a sliding movement is imparted to thecutter holder actuating member when the two members are moved to andfrom the main carrying member, and means carried by one of the twomembers for controlling the distance of movement of the pin.

2. A cutter head, including a tubular support, a main carrying diskdisposed at one end thereof, a cutter holder, an actuator for the holderslidably mounted in the outer face of said disk, an operating pincarried by the actuator and slidably mounted in the disk, said pin beingheld against oscillation by the disk and having a portion thereofprojected in an opposite direction from the actuator,

two disks mounted upon the tubular member and adjacent the face of themain disk,

means for adjusting the two disks relatively to each other, said disksbeing disposed for sliding movement upon the tubular member and disposedto rotate therewith, and cooperative means carried by both of thesliding disks and the projecting portion of the pin for impartingsliding movement to the pin and cutter holder actuator consonantly withthe sliding movement of the two disks.

3. A cutter head, including a tubular support, a main carrying diskdisposed at one end thereof, a cutter holder, an actuator for the holderslidably mounted in the outer face of said disk, an operating pincarried by the actuator and slidably mounted in the disk, said pin beingheld against oscilla tion by the disk and having a portion thereofprojected in an opposite direction from the actuator, two disks mountedupon the tubular member and adjacent the face of the main disk, meansfor adjusting the two disks relatively to each other, said disks beingdisposed for sliding movement upon the tubular member and disposed torotate therewith, and cooperative means carried by both of the slidingdisks and the pro jecting portion of the pin for imparting slidingmovement to the pin and cutter holder actuator consonantly with thesliding movement of the two disks, one of said latter two disks beingprovided with means for limiting the inward movement of the actuator andfor adjusting the cutter holder for action upon various sized work.

4. A cutter head, including a tubular support, a main carrying diskdisposed at one end thereof, a cutter holder, an actuator for the holderslidably mounted in the outer face of said disk, an operating pincarried by the actuator and slidably mounted in the disk, said pin beingheld against oscillation by the disk and having a portion thereofprojected in an opposite direction from the actuator, two disks mountedupon the tubular member and adjacent the face of the main disk, meansfor adjusting the two disks relatively to each other, said disks beingdisposed for sliding movement upon the tubular member and disposed torotate therewith, and cooperative means carried by both of the slidingdisks and the projecting portion of the pin for imparting slidingmovement to the pin and cutter holder actuator consonantly with thesliding movement of the two disks, said pin being provided with a doublecammed end, while one of the two disks is provided With a tangentialgroove In testimony that I claim the foregoing through the face thereofhavlng opposltely as my own, I have hereto afl'ixed my s1gna disposedcam shaped edges for ooaction with ture in the presence of twoWitnesses.

the double cammed ends of the pin, Where- VICTOR R. KOONTZ. by thesliding movement imparted to the Witnesses:

two disks imparts sliding movement to the JOSEPHINE ROLLMAN,

pin and cutter holder actuator. WATSON R. DONSON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

